External Request Type Function Control System, Terminal Device, External Request Type Function Control Method, and External Request Type Function Control Program

1. An external request type function control program for allowing a function of a terminal device to be controlled, characterized in causing a computer to execute the processes of: receiving function control information including an instruction for controlling a function of said terminal device, said function control information being transmitted by an external function control information transmitting device of the terminal device; monitoring a state of the function that could be specified in said function control information and storing a control source, being a cause of having changed a state of the function into a current state; based upon said monitoring result, comparing a priority degree of the current control source of the function specified in the function control information, out of said stored control sources, with a priority degree that is included in said function control information, thereby to determine whether or not the function control by said function control information is executable; and based upon said determination result, controlling said function of said terminal device.

2. The external request type function control program according to claim 1 , characterized in causing the computer to execute the processes of: determining whether or not the function control information transmitting device, being a transmission source that has transmitted the function control information, and a transmission source described in said function control information coincide with each other, and determining existence of tampering of said function control information; and controlling the function of the terminal device based upon said determination result.

3. The external request type function control program according to claim 1 , characterized in causing the computer to execute the processes of: determining whether or not a state of the terminal device meets a condition under which the function control described in the function control information is executed; and controlling said function of said terminal device based upon said determination result.

4. The external request type function control program according to claim 1 , characterized in causing the computer to execute the process of, based upon evaluation information described in the function control information, deciding whether or not a permission for executing the function control is requested of a user of the terminal device.

5. The external request type function control program according to claim 1 , characterized in causing the computer to execute the process of, in a case of having received plural kinds of the function control information, deciding an order in which a function control process is executed based upon evaluation information described in said function control information.

6. The external request type function control program according to claim 1 , characterized in causing the computer to execute the processes of: pre-storing an execution order of the executable function; and in a case of having received plural kinds of the function control information, deciding an order in which a function control process is executed based upon said stored execution order of said function.

7. The external request type function control program according to claim 1 , characterized in causing the computer to execute the processes of: pre-storing an execution order of the controllable function; and in a case of having received plural kinds of the function control information, deciding an order in which a function control process is executed based upon said stored execution order of said function and evaluation information described in said function control information.